Battery charging

[ssalino]

Hello all, looking for help with a Battery question. I just purchased a 1998 Wellcraft 3000 Martinique with two 5.7 engines. When hooked up with shore power and my boat has been sitting for a week, I can start one engine, but not the second without using the battery paralle switch? After crusing for a short distance, I can shut down for hours, and both will fire off one battery. Is something draining the one battery while docked? I have checked the manual that came with the boat, but the manual if very limited.....

Thanks you
Scott

[Maxjboxer]

Hi Scott,
I just bought the same boat - 1998 Wellcraft Martinique. I am having the same issue and it is not because there is something wrong with the battery charging. The problem is when you are hooked up on shore power, the boat is still using your starboard engine battery power to run most of the internal electrical needs. I cannot figure out how to run it all on the AC power. I may try to start another thread with that heading.

[paris]

The starboard battery system is the house battery for my 1999 3200Martinique. I have always shut everything down except the fridge. The trickle charger always kept the battery charged even with the fridge running until recently. I am certain that the trickle charger has died since the starboard engine won't start after a week. I am now trying to locate the charger...also check the pop-out breaker for the trickle charger.